Shell Oil Comapny

Randy Carl John

Harold J Vinegar

Vinod Kumar Sikka

Michael Leonard Santella

Dong Sub Kim

Joachim Hugo Schneibel

Phillip James Maziasz

John Paul Shingledecker

Danny Y Ngan

Philip James Maziasz

Harold Vinegar

A system for heating a hydrocarbon containing formation includes a heater having an elongated ferromagnetic metal heater section. The heater is located in an opening in a formation. The heater section is configured to heat the hydrocarbon containing formation. The exposed ferromagnetic metal has a sulfidation rate that goes down with increasing temperature of the heater, when the heater is in a selected temperature range.

Subsurface heaters with low sulfidation rates

High strength metal alloys are described herein. At least one composition of a metal alloy includes chromium, nickel, copper, manganese, silicon, niobium, tungsten and iron. System, methods, and heaters that include the high strength metal alloys are described herein. At least one heater system may include a canister at least partially made from material containing at least one of the metal alloys. At least one system for heating a subterranean formation may include a tublar that is at least partially made from a material containing at least one of the metal alloys.

High strength alloys

High strength metal alloys are described herein. At least one composition of a metal alloy includes chromium, nickel, copper, manganese, silicon, niobium, tungsten and iron. System, methods, and heaters that include the high strength metal alloys are described herein. At least one heater system may include a canister at least partially made from material containing at least one of the metal alloys. At least one system for heating a subterranean formation may include a tubular that is at least partially made from a material containing at least one of the metal alloys.

A process for heat treatment of high temperature steels in which the steels are heated to temperatures of at least 1800.degree. F. in the presence of hydrogen gas, methane, hydrogen sulfide, and steam. Articles made by the process have a unique layer enriched in chromium oxide, and reactor components made from the treated steel may be used in a process for the pyrolysis of liquid and gaseous hydrocarbons to inhibit coking.

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Houston, TX, United States of America

Randy Carl John